Datsun Roadster Forum-311s.org

thanks i'll have a look at that.

I changed the battery and now on iddling i'm reading 14V and 16 something when i accelerate.

Hmmm, still a bit high.
Shouldn't see 16V on a fresh battery.
I would suggest that your initial diagnosis, the VR, is correct.

Now on the subject of the VR, I don’t seem to find one that would work on a positive ground setup. I will post the question on the technical discussion.

I had a quick look today for the spare that I have, no luck so far.
I know I have it somewhere and you are welcome to it.
The new item I used was from this eBay seller: -
https://www.ebay.com.au/str/vintageimportsinc
You can click on the "Categories" button and select "Asian Car Parts" to search for Datsun.
I'll try and find some info. on it as to part number etc.
They don't appear to have any atm.

EDIT
I have done a wee bit of research and there is a thread on this site (viewtopic.php?t=11578&start=15) which describes using the VR from the Datsun 410 Bluebird which is also positive ground, P/N 23500-10600.
There is one available on eBay, https://www.ebay.com/itm/185591200364?h ... e%3ADatsun
A bit pricey though
I will continue to look for my spare for you

Thanks a lot for the info.
Datsun 1200 are quite common in Portugal which is quite close from France, I may be able to find some over there. In all case i will keep you posted and again thanks a lot for the help.

I found my spare VR. It looks very tatty but it is available if you draw a blank locally.

https://www.ebay.ca/itm/223772772618#shpCntId
I found this one online, but again they don't ship to France or even Europe!

Let me PM you about yours

I'll send you some pics of my original VR.
If you can not get one shipped perhaps I can send it to you from Oz?

Nissanman wrote: ↑Mon Aug 14, 2023 8:21 pm I'll send you some pics of my original VR.
If you can not get one shipped perhaps I can send it to you from Oz?

I have a friend in Canada, i placed the order on Ebay to be shipped to him, we will see how it goes! Hopefully i can drive it soon!

More than one way to remove the outer covering of a feline eh!

I received the VR and mounted it.
Now i read 14V when iddling and it goes up and stays at 14.6V when accelerating. I'm wondering if it is correct.
Now i can start to enjoy this little beauty on the road!

Oncle-phil, that is too high. 13.8 at revs is the max and 12.7ish at idle.
However that applies to a battery in good condition.
After a drive, check the voltage at the battery again both with engine running and also with engine off.

Are they somewhat adjustable?

Well, they a relays with contacts but I wouldn't dick about with that unless I was VERY sure of what the results would be